The Question:

Can you please tell me what the world's highest city is?

The Answer:

According to The Guinness Book of World Records, the highest
town in the world is Wenzhuan, which was founded in 1955 on the
Qinghai-Tibet road north of the Tangla mountain range. It is
16,730 feet above sea level.

The highest capital in the world, before the domination of Tibet
by China, was Lhasa, with an elevation
of 12,087 feet above sea level. La Paz, the
administrative and de facto capital of Bolivia, stands at an altitude
of 11,913 feet above sea level.

And finally, the highest city in the United States is Leadville, Colo. with an
elevation of 10,430 feet.